التفاصيل البيبلوغرافية
| العنوان: |
Retention Force and Wear Characteristics of three Attachment Systems after Dislodging Cycles. |
| المؤلفون: |
Marin DOM; Department of Dental Materials and Prosthodontics, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil., Leite ARP; Department of Dental Materials and Prosthodontics, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil., Oliveira Junior NM; Department of Dental Materials and Prosthodontics, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil., Paleari AG; Department of Restorative Dentistry, UNIFAL - Universidade Federal de Alfenas, Alfenas, MG, Brazil., Pero AC; Department of Dental Materials and Prosthodontics, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil., Compagnoni MA; Department of Dental Materials and Prosthodontics, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil. |
| المصدر: |
Brazilian dental journal [Braz Dent J] 2018 Nov-Dec; Vol. 29 (6), pp. 576-582. |
| نوع المنشور: |
Evaluation Study; Journal Article |
| اللغة: |
English |
| بيانات الدورية: |
Publisher: Dental Foundation of Ribeirão Preto Country of Publication: Brazil NLM ID: 9214652 Publication Model: Print Cited Medium: Internet ISSN: 1806-4760 (Electronic) Linking ISSN: 01036440 NLM ISO Abbreviation: Braz Dent J |
| أسماء مطبوعة: |
Original Publication: Ribeirão Preto : Dental Foundation of Ribeirão Preto, [1990- |
| مواضيع طبية MeSH: |
Dental Prosthesis, Implant-Supported* , Denture Precision Attachment* , Denture, Overlay*, Dental Stress Analysis ; Humans ; Materials Testing ; Microscopy, Electron, Scanning ; Saliva, Artificial ; Tensile Strength |
| مستخلص: |
Several attachment systems for mandibular implant-supported overdentures are currently available and studies are required to understand their mechanical properties. The objective of this study was to evaluate the retention force and wear characteristics of three attachment systems in a simulation of the cyclic dislodging of implant-supported overdentures. Thirty samples were fabricated and divided into 3 groups: 1-O-ring; 2-Mini Ball; and 3-Equator. A mechanical fatigue test was applied to the specimens using a servo-hydraulic universal testing machine performing 5500 insertion/removal cycles (f=0.8 Hz), immersed in artificial saliva. Retention force values were obtained before and after 1500, 3000, and 5500 cycles using a speed of 1 mm/min and a load cell of 1 kN. One specimen from each group was randomly selected and analyzed by scanning electron microscopy. Two-way repeated measures ANOVA and the Bonferroni post hoc test were used for statistical analyses (α=0.05). The O-ring system remained stable during all periods tested and exhibited significantly lower retention force values than the Mini Ball and Equator systems. The Mini Ball system exhibited a significant increase in retention force after the mechanical test (baseline=21.04±3.29N; 5500 cycles=24.01±3.30N).The Equator system exhibited a significant decrease in retention force after each period tested, but the values were higher than the other systems. The type of attachment was found to influence retention force in different ways after mechanical tests. The Equator system exhibited the highest retention force values. The Mini Ball and Equator matrices produced deformation and wear on the surfaces without breakage of the polyamide rings. |
| المشرفين على المادة: |
0 (Saliva, Artificial) |
| تواريخ الأحداث: |
Date Created: 20181206 Date Completed: 20190424 Latest Revision: 20191210 |
| رمز التحديث: |
20240628 |
| DOI: |
10.1590/0103-6440201802074 |
| PMID: |
30517481 |
| قاعدة البيانات: |
MEDLINE |
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